{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "885fe18f5542fe283a17f70583383c6cadcba1c3"
            },
            {
              "fixed": "97f3c15957ec7e6d249f05407ad947c0644df24d"
            },
            {
              "fixed": "a4afffd148991a826e8995362fb10cf8705c1130"
            },
            {
              "fixed": "eabe9a59640698137d7382d5b549e95dc37f7565"
            },
            {
              "fixed": "a56e7641e09bd80b976e944ae759109b86fd5b38"
            },
            {
              "fixed": "acc789b2173070638cad89c2b61d33ed338be0dd"
            },
            {
              "fixed": "9afd605dcd96c7a45f338eded1de16679b30e1df"
            },
            {
              "fixed": "5d4812668b03f823b5044789d6aa77fe56b42587"
            },
            {
              "fixed": "906e410dcffbbd99fb4081abab817a830033aa28"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.1.0"
            },
            {
              "fixed": "5.10.265"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.216"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68217.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pwc: Drain fill_buf on start_streaming() failure\n\npwc_isoc_init() submits its isochronous URBs with\nusb_submit_urb(.., GFP_KERNEL) in a loop. After the first URB is\nsubmitted, its completion handler pwc_isoc_handler() can run on another\nCPU before the loop finishes:\n\n  start_streaming()\n    pwc_isoc_init()\n      usb_submit_urb(urbs[0], GFP_KERNEL)\n                                  pwc_isoc_handler(urbs[0])\n                                    pdev-\u003efill_buf =\n                                      pwc_get_next_fill_buf(pdev)\n      usb_submit_urb(urbs[i\u003e0], ..)  -\u003e fails\n      pwc_isoc_cleanup(pdev)           /* kills URBs */\n      return ret;\n    pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_QUEUED)\n\npwc_get_next_fill_buf() detaches a buffer from pdev-\u003equeued_bufs and\nstores it in pdev-\u003efill_buf. The error path in start_streaming() only\ndrains pdev-\u003equeued_bufs, so the buffer parked in pdev-\u003efill_buf is\nleaked. vb2_start_streaming() then triggers\nWARN_ON(owned_by_drv_count).\n\nstop_streaming() already handles this since commit 80b0963e1698\n(\"[media] pwc: fix WARN_ON\"), which added the fill_buf drain in the\nteardown path but not in the start_streaming() error path. Mirror that\nhandling on failure so start_streaming() returns with no buffer owned\nby the driver.\n\nIssue identified by automated review of the INV-003 series at\nhttps://sashiko.dev/",
  "id": "CVE-2026-68217",
  "modified": "2026-08-21T03:30:11.045773082Z",
  "published": "2026-08-10T12:00:36.773Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d4812668b03f823b5044789d6aa77fe56b42587"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/906e410dcffbbd99fb4081abab817a830033aa28"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/97f3c15957ec7e6d249f05407ad947c0644df24d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9afd605dcd96c7a45f338eded1de16679b30e1df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4afffd148991a826e8995362fb10cf8705c1130"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a56e7641e09bd80b976e944ae759109b86fd5b38"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/acc789b2173070638cad89c2b61d33ed338be0dd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eabe9a59640698137d7382d5b549e95dc37f7565"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68217.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68217"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "media: pwc: Drain fill_buf on start_streaming() failure"
}